forked from mirrors/gecko-dev
b503616295
# ignore-this-changeset Differential Revision: https://phabricator.services.mozilla.com/D36056 --HG-- extra : source : 2616392f26053ee376b9126fbca696de5d4bb15b
29 lines
855 B
JavaScript
29 lines
855 B
JavaScript
"use strict";
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var { ObjectUtils } = ChromeUtils.import(
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"resource://gre/modules/ObjectUtils.jsm"
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);
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var { PromiseTestUtils } = ChromeUtils.import(
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"resource://testing-common/PromiseTestUtils.jsm"
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);
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add_task(async function test_strict() {
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let loose = { a: 1 };
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let strict = ObjectUtils.strict(loose);
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loose.a; // Should not throw.
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loose.b || undefined; // Should not throw.
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strict.a; // Should not throw.
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PromiseTestUtils.expectUncaughtRejection(/No such property: "b"/);
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Assert.throws(() => strict.b, /No such property: "b"/);
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"b" in strict; // Should not throw.
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strict.b = 2;
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strict.b; // Should not throw.
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PromiseTestUtils.expectUncaughtRejection(/No such property: "c"/);
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Assert.throws(() => strict.c, /No such property: "c"/);
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"c" in strict; // Should not throw.
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loose.c = 3;
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strict.c; // Should not throw.
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});
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